Asteroid/comet Earth Impact

1998 is the year of the asteroid as two of Hollywoods biggest disaster movies will hit cinemas this summer. Disney's Armageddon and Dreamwork's Deep Impact will both deal with the scenario that one day, an asteroid or comet might collide with Earth. It's not just celluloid fantasy as scientists have long since established that an impact wiped out nearly all of life on Earth - including the Dinosaurs - some 65 million years ago.